/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 23:42:36,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 23:42:36,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 23:42:36,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 23:42:36,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 23:42:36,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 23:42:36,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 23:42:36,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 23:42:36,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 23:42:36,471 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 23:42:36,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 23:42:36,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 23:42:36,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 23:42:36,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 23:42:36,473 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 23:42:36,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 23:42:36,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 23:42:36,474 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 23:42:36,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 23:42:36,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 23:42:36,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 23:42:36,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 23:42:36,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 23:42:36,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 23:42:36,475 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 23:42:36,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 23:42:36,476 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 23:42:36,476 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 23:42:36,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 23:42:36,476 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 23:42:36,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 23:42:36,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 23:42:36,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 23:42:36,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 23:42:36,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:42:36,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 23:42:36,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 23:42:36,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 23:42:36,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 23:42:36,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 23:42:36,480 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 23:42:36,480 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 23:42:36,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 23:42:36,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 23:42:36,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 23:42:36,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 23:42:36,641 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 23:42:36,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2023-12-21 23:42:37,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 23:42:37,993 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 23:42:37,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2023-12-21 23:42:38,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b05c0e3/f97c31a2232f447f8339def11ff7e332/FLAG83953656f [2023-12-21 23:42:38,038 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b05c0e3/f97c31a2232f447f8339def11ff7e332 [2023-12-21 23:42:38,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 23:42:38,041 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 23:42:38,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 23:42:38,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 23:42:38,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 23:42:38,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:42:38" (1/1) ... [2023-12-21 23:42:38,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fcd2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:38, skipping insertion in model container [2023-12-21 23:42:38,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:42:38" (1/1) ... [2023-12-21 23:42:38,133 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 23:42:38,364 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2023-12-21 23:42:38,402 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2023-12-21 23:42:38,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:42:38,957 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 23:42:38,988 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2023-12-21 23:42:38,995 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2023-12-21 23:42:39,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 23:42:39,311 INFO L206 MainTranslator]: Completed translation [2023-12-21 23:42:39,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39 WrapperNode [2023-12-21 23:42:39,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 23:42:39,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 23:42:39,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 23:42:39,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 23:42:39,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,496 INFO L138 Inliner]: procedures = 34, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4961 [2023-12-21 23:42:39,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 23:42:39,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 23:42:39,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 23:42:39,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 23:42:39,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,602 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 23:42:39,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,747 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 23:42:39,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 23:42:39,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 23:42:39,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 23:42:39,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (1/1) ... [2023-12-21 23:42:39,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 23:42:39,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 23:42:39,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 23:42:39,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 23:42:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 23:42:39,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 23:42:39,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 23:42:39,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 23:42:39,882 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 23:42:39,883 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 23:43:03,506 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 23:43:03,555 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 23:43:03,555 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 23:43:03,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:03 BoogieIcfgContainer [2023-12-21 23:43:03,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 23:43:03,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 23:43:03,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 23:43:03,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 23:43:03,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:42:38" (1/3) ... [2023-12-21 23:43:03,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f496b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:03, skipping insertion in model container [2023-12-21 23:43:03,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:42:39" (2/3) ... [2023-12-21 23:43:03,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f496b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:03, skipping insertion in model container [2023-12-21 23:43:03,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:03" (3/3) ... [2023-12-21 23:43:03,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2023-12-21 23:43:03,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 23:43:03,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 23:43:03,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 23:43:03,636 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@159e0d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 23:43:03,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 23:43:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:43:03,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:03,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:03,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:03,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:03,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1841439881, now seen corresponding path program 1 times [2023-12-21 23:43:03,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906549240] [2023-12-21 23:43:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:03,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:03,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:03,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 23:43:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:03,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 23:43:03,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:03,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:03,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906549240] [2023-12-21 23:43:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906549240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:43:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130175970] [2023-12-21 23:43:03,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:03,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 23:43:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 23:43:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:43:03,781 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:03,870 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-21 23:43:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 23:43:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 23:43:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:03,904 INFO L225 Difference]: With dead ends: 1594 [2023-12-21 23:43:03,904 INFO L226 Difference]: Without dead ends: 803 [2023-12-21 23:43:03,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 23:43:03,910 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:03,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-21 23:43:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-21 23:43:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-21 23:43:03,978 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-21 23:43:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:03,979 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-21 23:43:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-21 23:43:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 23:43:03,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:03,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:03,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 23:43:04,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:04,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1254633867, now seen corresponding path program 1 times [2023-12-21 23:43:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973703347] [2023-12-21 23:43:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:04,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:04,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 23:43:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:04,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:43:04,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:04,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:04,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973703347] [2023-12-21 23:43:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973703347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:04,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:04,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:43:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462379239] [2023-12-21 23:43:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:43:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:43:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:43:04,307 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:04,373 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-21 23:43:04,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:43:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-21 23:43:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:04,377 INFO L225 Difference]: With dead ends: 864 [2023-12-21 23:43:04,377 INFO L226 Difference]: Without dead ends: 832 [2023-12-21 23:43:04,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:43:04,379 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:04,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-21 23:43:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-21 23:43:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-21 23:43:04,394 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-21 23:43:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:04,394 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-21 23:43:04,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:04,394 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-21 23:43:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 23:43:04,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:04,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:04,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 23:43:04,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1778296401, now seen corresponding path program 1 times [2023-12-21 23:43:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27488282] [2023-12-21 23:43:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:04,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:04,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:04,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 23:43:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:04,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:04,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:04,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:04,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:04,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27488282] [2023-12-21 23:43:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27488282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:04,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:43:04,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724491617] [2023-12-21 23:43:04,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:04,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:04,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:04,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:04,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:04,712 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:39,845 INFO L93 Difference]: Finished difference Result 2307 states and 4378 transitions. [2023-12-21 23:43:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:39,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-21 23:43:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:39,850 INFO L225 Difference]: With dead ends: 2307 [2023-12-21 23:43:39,850 INFO L226 Difference]: Without dead ends: 1554 [2023-12-21 23:43:39,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:39,853 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 861 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:39,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 491 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 35.0s Time] [2023-12-21 23:43:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2023-12-21 23:43:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2023-12-21 23:43:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1552 states have (on average 1.6314432989690721) internal successors, (2532), 1553 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2532 transitions. [2023-12-21 23:43:39,878 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2532 transitions. Word has length 23 [2023-12-21 23:43:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:39,878 INFO L495 AbstractCegarLoop]: Abstraction has 1554 states and 2532 transitions. [2023-12-21 23:43:39,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2532 transitions. [2023-12-21 23:43:39,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-21 23:43:39,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:39,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:39,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 23:43:40,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:40,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:40,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1671742577, now seen corresponding path program 1 times [2023-12-21 23:43:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583496114] [2023-12-21 23:43:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:40,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:40,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:40,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 23:43:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:40,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:43:40,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:40,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:40,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:40,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583496114] [2023-12-21 23:43:40,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583496114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:40,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:40,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:43:40,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512778201] [2023-12-21 23:43:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:43:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:43:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:43:40,388 INFO L87 Difference]: Start difference. First operand 1554 states and 2532 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:40,495 INFO L93 Difference]: Finished difference Result 1670 states and 2716 transitions. [2023-12-21 23:43:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:43:40,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-21 23:43:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:40,500 INFO L225 Difference]: With dead ends: 1670 [2023-12-21 23:43:40,500 INFO L226 Difference]: Without dead ends: 1641 [2023-12-21 23:43:40,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:43:40,501 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 3033 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:40,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 1656 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:43:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2023-12-21 23:43:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1608. [2023-12-21 23:43:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1606 states have (on average 1.6307596513075966) internal successors, (2619), 1607 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2619 transitions. [2023-12-21 23:43:40,524 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2619 transitions. Word has length 32 [2023-12-21 23:43:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:40,524 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2619 transitions. [2023-12-21 23:43:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2619 transitions. [2023-12-21 23:43:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 23:43:40,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:40,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:40,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 23:43:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:40,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash -349538145, now seen corresponding path program 1 times [2023-12-21 23:43:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683193566] [2023-12-21 23:43:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:40,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:40,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:40,730 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 23:43:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:40,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:40,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:40,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:40,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:40,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683193566] [2023-12-21 23:43:40,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683193566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:40,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:40,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559805118] [2023-12-21 23:43:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:40,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:40,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:40,846 INFO L87 Difference]: Start difference. First operand 1608 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:40,879 INFO L93 Difference]: Finished difference Result 1758 states and 2857 transitions. [2023-12-21 23:43:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-21 23:43:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:40,884 INFO L225 Difference]: With dead ends: 1758 [2023-12-21 23:43:40,884 INFO L226 Difference]: Without dead ends: 1675 [2023-12-21 23:43:40,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:40,885 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:40,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1541 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-21 23:43:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1673. [2023-12-21 23:43:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1671 states have (on average 1.6265709156193895) internal successors, (2718), 1672 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2718 transitions. [2023-12-21 23:43:40,910 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2718 transitions. Word has length 34 [2023-12-21 23:43:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:40,910 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2718 transitions. [2023-12-21 23:43:40,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2718 transitions. [2023-12-21 23:43:40,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 23:43:40,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:40,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:40,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:41,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:41,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1987358074, now seen corresponding path program 1 times [2023-12-21 23:43:41,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:41,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661649780] [2023-12-21 23:43:41,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:41,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:41,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:41,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 23:43:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:41,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 23:43:41,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:41,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:41,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:41,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661649780] [2023-12-21 23:43:41,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661649780] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:41,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 23:43:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413793634] [2023-12-21 23:43:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 23:43:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 23:43:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:43:41,185 INFO L87 Difference]: Start difference. First operand 1673 states and 2718 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:41,225 INFO L93 Difference]: Finished difference Result 1687 states and 2735 transitions. [2023-12-21 23:43:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 23:43:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-21 23:43:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:41,231 INFO L225 Difference]: With dead ends: 1687 [2023-12-21 23:43:41,231 INFO L226 Difference]: Without dead ends: 1685 [2023-12-21 23:43:41,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 23:43:41,233 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:41,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2023-12-21 23:43:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1681. [2023-12-21 23:43:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1679 states have (on average 1.622989874925551) internal successors, (2725), 1680 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2725 transitions. [2023-12-21 23:43:41,258 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2725 transitions. Word has length 35 [2023-12-21 23:43:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:41,259 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2725 transitions. [2023-12-21 23:43:41,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2725 transitions. [2023-12-21 23:43:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:43:41,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:41,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 177157591, now seen corresponding path program 1 times [2023-12-21 23:43:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:41,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462050478] [2023-12-21 23:43:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:41,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:41,482 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:41,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 23:43:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:41,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:41,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:41,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:41,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:41,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462050478] [2023-12-21 23:43:41,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462050478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128764047] [2023-12-21 23:43:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:41,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:41,583 INFO L87 Difference]: Start difference. First operand 1681 states and 2725 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:41,613 INFO L93 Difference]: Finished difference Result 1849 states and 2985 transitions. [2023-12-21 23:43:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:41,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:43:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:41,618 INFO L225 Difference]: With dead ends: 1849 [2023-12-21 23:43:41,618 INFO L226 Difference]: Without dead ends: 1760 [2023-12-21 23:43:41,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:41,619 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:41,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:41,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-12-21 23:43:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1758. [2023-12-21 23:43:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.617881548974943) internal successors, (2841), 1757 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2841 transitions. [2023-12-21 23:43:41,667 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2841 transitions. Word has length 36 [2023-12-21 23:43:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:41,668 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2841 transitions. [2023-12-21 23:43:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2841 transitions. [2023-12-21 23:43:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:43:41,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:41,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:41,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 23:43:41,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:41,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash -448498473, now seen corresponding path program 1 times [2023-12-21 23:43:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:41,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343583840] [2023-12-21 23:43:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:41,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:41,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:41,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 23:43:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:41,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:41,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:41,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:41,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343583840] [2023-12-21 23:43:41,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343583840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:41,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:41,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060504432] [2023-12-21 23:43:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:41,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:41,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:41,955 INFO L87 Difference]: Start difference. First operand 1758 states and 2841 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:41,984 INFO L93 Difference]: Finished difference Result 2184 states and 3484 transitions. [2023-12-21 23:43:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:43:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:41,990 INFO L225 Difference]: With dead ends: 2184 [2023-12-21 23:43:41,990 INFO L226 Difference]: Without dead ends: 1953 [2023-12-21 23:43:41,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:41,992 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:41,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2023-12-21 23:43:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1951. [2023-12-21 23:43:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1949 states have (on average 1.6013340174448436) internal successors, (3121), 1950 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3121 transitions. [2023-12-21 23:43:42,024 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3121 transitions. Word has length 36 [2023-12-21 23:43:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:42,024 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3121 transitions. [2023-12-21 23:43:42,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3121 transitions. [2023-12-21 23:43:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 23:43:42,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:42,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:42,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:42,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:42,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:42,229 INFO L85 PathProgramCache]: Analyzing trace with hash 440234967, now seen corresponding path program 1 times [2023-12-21 23:43:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40294767] [2023-12-21 23:43:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:42,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:42,231 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:42,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 23:43:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:42,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:42,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:42,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:42,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40294767] [2023-12-21 23:43:42,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40294767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:42,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:42,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70729147] [2023-12-21 23:43:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:42,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:42,323 INFO L87 Difference]: Start difference. First operand 1951 states and 3121 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:42,354 INFO L93 Difference]: Finished difference Result 2727 states and 4261 transitions. [2023-12-21 23:43:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 23:43:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:42,362 INFO L225 Difference]: With dead ends: 2727 [2023-12-21 23:43:42,362 INFO L226 Difference]: Without dead ends: 2303 [2023-12-21 23:43:42,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:42,366 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:42,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-12-21 23:43:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2301. [2023-12-21 23:43:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2299 states have (on average 1.5698129621574597) internal successors, (3609), 2300 states have internal predecessors, (3609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3609 transitions. [2023-12-21 23:43:42,399 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3609 transitions. Word has length 36 [2023-12-21 23:43:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:42,399 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3609 transitions. [2023-12-21 23:43:42,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3609 transitions. [2023-12-21 23:43:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:43:42,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:42,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:42,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:42,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash -615837049, now seen corresponding path program 1 times [2023-12-21 23:43:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814534235] [2023-12-21 23:43:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:42,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:42,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:42,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:42,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 23:43:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:42,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:43:42,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:43,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:43,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:43,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814534235] [2023-12-21 23:43:43,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814534235] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:43,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:43:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337401879] [2023-12-21 23:43:43,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:43:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:43,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:43:43,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:43:43,556 INFO L87 Difference]: Start difference. First operand 2301 states and 3609 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:44,866 INFO L93 Difference]: Finished difference Result 4019 states and 6054 transitions. [2023-12-21 23:43:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:43:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:43:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:44,897 INFO L225 Difference]: With dead ends: 4019 [2023-12-21 23:43:44,897 INFO L226 Difference]: Without dead ends: 3465 [2023-12-21 23:43:44,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-21 23:43:44,899 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 4787 mSDsluCounter, 10502 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 12002 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:44,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 12002 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 23:43:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2023-12-21 23:43:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3073. [2023-12-21 23:43:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 3071 states have (on average 1.5359817648974274) internal successors, (4717), 3072 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 4717 transitions. [2023-12-21 23:43:44,960 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 4717 transitions. Word has length 50 [2023-12-21 23:43:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:44,960 INFO L495 AbstractCegarLoop]: Abstraction has 3073 states and 4717 transitions. [2023-12-21 23:43:44,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 16 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 4717 transitions. [2023-12-21 23:43:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 23:43:44,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:44,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:44,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-21 23:43:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1241493113, now seen corresponding path program 1 times [2023-12-21 23:43:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:45,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797375341] [2023-12-21 23:43:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:45,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:45,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:45,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 23:43:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:45,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:45,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:45,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:45,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:45,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797375341] [2023-12-21 23:43:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797375341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:45,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994587435] [2023-12-21 23:43:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:45,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:45,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:45,250 INFO L87 Difference]: Start difference. First operand 3073 states and 4717 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:45,288 INFO L93 Difference]: Finished difference Result 4195 states and 6354 transitions. [2023-12-21 23:43:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:45,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-21 23:43:45,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:45,295 INFO L225 Difference]: With dead ends: 4195 [2023-12-21 23:43:45,295 INFO L226 Difference]: Without dead ends: 2649 [2023-12-21 23:43:45,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:45,297 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 31 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:45,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2649 states. [2023-12-21 23:43:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2649 to 2642. [2023-12-21 23:43:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5507575757575758) internal successors, (4094), 2641 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4094 transitions. [2023-12-21 23:43:45,336 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4094 transitions. Word has length 50 [2023-12-21 23:43:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:45,337 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4094 transitions. [2023-12-21 23:43:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4094 transitions. [2023-12-21 23:43:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 23:43:45,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:45,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:45,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:45,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:45,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2123131417, now seen corresponding path program 1 times [2023-12-21 23:43:45,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:45,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346115236] [2023-12-21 23:43:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:45,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:45,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:45,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 23:43:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:45,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:45,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:45,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:45,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346115236] [2023-12-21 23:43:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346115236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:45,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508702829] [2023-12-21 23:43:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:45,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:45,639 INFO L87 Difference]: Start difference. First operand 2642 states and 4094 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:45,669 INFO L93 Difference]: Finished difference Result 3198 states and 4894 transitions. [2023-12-21 23:43:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 23:43:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:45,675 INFO L225 Difference]: With dead ends: 3198 [2023-12-21 23:43:45,675 INFO L226 Difference]: Without dead ends: 2092 [2023-12-21 23:43:45,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:45,676 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 27 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:45,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3002 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:45,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2023-12-21 23:43:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2023-12-21 23:43:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2088 states have (on average 1.5727969348659003) internal successors, (3284), 2089 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3284 transitions. [2023-12-21 23:43:45,704 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3284 transitions. Word has length 52 [2023-12-21 23:43:45,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:45,704 INFO L495 AbstractCegarLoop]: Abstraction has 2090 states and 3284 transitions. [2023-12-21 23:43:45,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3284 transitions. [2023-12-21 23:43:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 23:43:45,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:45,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:45,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:45,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:45,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:45,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1722853301, now seen corresponding path program 1 times [2023-12-21 23:43:45,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:45,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810067598] [2023-12-21 23:43:45,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:45,910 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 23:43:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:45,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:43:45,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:46,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:46,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:46,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810067598] [2023-12-21 23:43:46,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810067598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:46,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:43:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417672252] [2023-12-21 23:43:46,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:43:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:43:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:43:46,814 INFO L87 Difference]: Start difference. First operand 2090 states and 3284 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:47,752 INFO L93 Difference]: Finished difference Result 3622 states and 5424 transitions. [2023-12-21 23:43:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 23:43:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 23:43:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:47,760 INFO L225 Difference]: With dead ends: 3622 [2023-12-21 23:43:47,760 INFO L226 Difference]: Without dead ends: 3068 [2023-12-21 23:43:47,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-21 23:43:47,762 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 4756 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 10526 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:47,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4756 Valid, 10526 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 23:43:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2023-12-21 23:43:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2714. [2023-12-21 23:43:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2712 states have (on average 1.5228613569321534) internal successors, (4130), 2713 states have internal predecessors, (4130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4130 transitions. [2023-12-21 23:43:47,811 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4130 transitions. Word has length 53 [2023-12-21 23:43:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:47,812 INFO L495 AbstractCegarLoop]: Abstraction has 2714 states and 4130 transitions. [2023-12-21 23:43:47,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:47,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4130 transitions. [2023-12-21 23:43:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 23:43:47,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:47,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:47,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:48,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:48,018 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1913655543, now seen corresponding path program 1 times [2023-12-21 23:43:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:48,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390991831] [2023-12-21 23:43:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:48,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:48,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:48,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:48,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 23:43:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:48,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:43:48,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:48,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:43:48,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390991831] [2023-12-21 23:43:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390991831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:43:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:43:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 23:43:48,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15454151] [2023-12-21 23:43:48,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:43:48,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:43:48,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:43:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:48,106 INFO L87 Difference]: Start difference. First operand 2714 states and 4130 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:48,138 INFO L93 Difference]: Finished difference Result 3254 states and 4871 transitions. [2023-12-21 23:43:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:43:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 23:43:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:48,142 INFO L225 Difference]: With dead ends: 3254 [2023-12-21 23:43:48,142 INFO L226 Difference]: Without dead ends: 2076 [2023-12-21 23:43:48,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:43:48,143 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 23 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:48,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2023-12-21 23:43:48,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2074. [2023-12-21 23:43:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2072 states have (on average 1.556949806949807) internal successors, (3226), 2073 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3226 transitions. [2023-12-21 23:43:48,170 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3226 transitions. Word has length 55 [2023-12-21 23:43:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:48,170 INFO L495 AbstractCegarLoop]: Abstraction has 2074 states and 3226 transitions. [2023-12-21 23:43:48,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3226 transitions. [2023-12-21 23:43:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 23:43:48,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:48,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:48,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:48,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:48,374 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:48,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -247775685, now seen corresponding path program 1 times [2023-12-21 23:43:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353004651] [2023-12-21 23:43:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:48,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:48,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:48,376 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:48,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 23:43:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:48,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 23:43:48,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:48,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:49,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:49,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353004651] [2023-12-21 23:43:49,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353004651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:49,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:49,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-21 23:43:49,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947470825] [2023-12-21 23:43:49,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:49,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 23:43:49,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:49,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 23:43:49,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-21 23:43:49,205 INFO L87 Difference]: Start difference. First operand 2074 states and 3226 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:50,161 INFO L93 Difference]: Finished difference Result 3112 states and 4605 transitions. [2023-12-21 23:43:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 23:43:50,161 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 23:43:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:50,165 INFO L225 Difference]: With dead ends: 3112 [2023-12-21 23:43:50,165 INFO L226 Difference]: Without dead ends: 2574 [2023-12-21 23:43:50,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 23:43:50,166 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 1762 mSDsluCounter, 8996 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 10505 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:50,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 10505 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 23:43:50,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2023-12-21 23:43:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2456. [2023-12-21 23:43:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2454 states have (on average 1.5138549307253464) internal successors, (3715), 2455 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3715 transitions. [2023-12-21 23:43:50,210 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3715 transitions. Word has length 56 [2023-12-21 23:43:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:50,210 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 3715 transitions. [2023-12-21 23:43:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3715 transitions. [2023-12-21 23:43:50,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 23:43:50,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:50,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:50,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:50,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:50,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:50,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1496708147, now seen corresponding path program 1 times [2023-12-21 23:43:50,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:50,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148383141] [2023-12-21 23:43:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:50,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:50,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:50,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:50,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 23:43:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:50,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 23:43:50,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:43:50,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 23:43:50,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148383141] [2023-12-21 23:43:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148383141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:50,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:50,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-21 23:43:50,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929232430] [2023-12-21 23:43:50,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:50,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 23:43:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 23:43:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:43:50,704 INFO L87 Difference]: Start difference. First operand 2456 states and 3715 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:50,819 INFO L93 Difference]: Finished difference Result 4276 states and 6053 transitions. [2023-12-21 23:43:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:43:50,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-21 23:43:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:50,824 INFO L225 Difference]: With dead ends: 4276 [2023-12-21 23:43:50,825 INFO L226 Difference]: Without dead ends: 3356 [2023-12-21 23:43:50,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 23:43:50,826 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1480 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:50,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 3123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 23:43:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2023-12-21 23:43:50,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3260. [2023-12-21 23:43:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.4223449969306323) internal successors, (4634), 3259 states have internal predecessors, (4634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4634 transitions. [2023-12-21 23:43:50,907 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4634 transitions. Word has length 58 [2023-12-21 23:43:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:50,907 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4634 transitions. [2023-12-21 23:43:50,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4634 transitions. [2023-12-21 23:43:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 23:43:50,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:50,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:50,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-21 23:43:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:51,111 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:51,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -815188029, now seen corresponding path program 1 times [2023-12-21 23:43:51,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186761662] [2023-12-21 23:43:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:51,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:51,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:51,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 23:43:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:51,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:51,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:52,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:52,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:52,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186761662] [2023-12-21 23:43:52,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186761662] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:52,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:52,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:43:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556751745] [2023-12-21 23:43:52,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:52,687 INFO L87 Difference]: Start difference. First operand 3260 states and 4634 transitions. Second operand has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:54,248 INFO L93 Difference]: Finished difference Result 4380 states and 6054 transitions. [2023-12-21 23:43:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 23:43:54,249 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-21 23:43:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:54,253 INFO L225 Difference]: With dead ends: 4380 [2023-12-21 23:43:54,253 INFO L226 Difference]: Without dead ends: 3294 [2023-12-21 23:43:54,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=383, Invalid=1423, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:43:54,255 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 19326 mSDsluCounter, 6110 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19326 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:54,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19326 Valid, 7603 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 23:43:54,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2023-12-21 23:43:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3260. [2023-12-21 23:43:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.412523020257827) internal successors, (4602), 3259 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4602 transitions. [2023-12-21 23:43:54,321 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4602 transitions. Word has length 91 [2023-12-21 23:43:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:54,322 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4602 transitions. [2023-12-21 23:43:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.384615384615385) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4602 transitions. [2023-12-21 23:43:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 23:43:54,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:54,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:54,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 23:43:54,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:54,527 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:54,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:54,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2015722075, now seen corresponding path program 1 times [2023-12-21 23:43:54,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:54,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485499573] [2023-12-21 23:43:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:54,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:54,528 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:54,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 23:43:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:54,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 23:43:54,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:55,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:43:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:56,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:43:56,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485499573] [2023-12-21 23:43:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485499573] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:43:56,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:43:56,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-21 23:43:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12014946] [2023-12-21 23:43:56,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:43:56,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:43:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:43:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:43:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:43:56,172 INFO L87 Difference]: Start difference. First operand 3260 states and 4602 transitions. Second operand has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:43:58,234 INFO L93 Difference]: Finished difference Result 4090 states and 5638 transitions. [2023-12-21 23:43:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 23:43:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-21 23:43:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:43:58,239 INFO L225 Difference]: With dead ends: 4090 [2023-12-21 23:43:58,240 INFO L226 Difference]: Without dead ends: 3396 [2023-12-21 23:43:58,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=417, Invalid=1563, Unknown=0, NotChecked=0, Total=1980 [2023-12-21 23:43:58,241 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 11856 mSDsluCounter, 9234 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11856 SdHoareTripleChecker+Valid, 10727 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:43:58,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11856 Valid, 10727 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 23:43:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2023-12-21 23:43:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3260. [2023-12-21 23:43:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3258 states have (on average 1.4076120319214243) internal successors, (4586), 3259 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4586 transitions. [2023-12-21 23:43:58,312 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4586 transitions. Word has length 92 [2023-12-21 23:43:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:43:58,312 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4586 transitions. [2023-12-21 23:43:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.615384615384615) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:43:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4586 transitions. [2023-12-21 23:43:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:43:58,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:43:58,314 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:43:58,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-12-21 23:43:58,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:58,517 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:43:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:43:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1792575379, now seen corresponding path program 1 times [2023-12-21 23:43:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:43:58,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174824412] [2023-12-21 23:43:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:43:58,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:43:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:43:58,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:43:58,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 23:43:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:43:58,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:43:58,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:43:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:43:59,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 13 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:00,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:00,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174824412] [2023-12-21 23:44:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174824412] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:00,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996720208] [2023-12-21 23:44:00,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:00,497 INFO L87 Difference]: Start difference. First operand 3260 states and 4586 transitions. Second operand has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:06,232 INFO L93 Difference]: Finished difference Result 4426 states and 6000 transitions. [2023-12-21 23:44:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 23:44:06,240 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:06,245 INFO L225 Difference]: With dead ends: 4426 [2023-12-21 23:44:06,246 INFO L226 Difference]: Without dead ends: 3708 [2023-12-21 23:44:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2023-12-21 23:44:06,248 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 2070 mSDsluCounter, 24620 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 26189 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:06,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 26189 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 23:44:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2023-12-21 23:44:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 2650. [2023-12-21 23:44:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2648 states have (on average 1.4535498489425982) internal successors, (3849), 2649 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3849 transitions. [2023-12-21 23:44:06,308 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3849 transitions. Word has length 93 [2023-12-21 23:44:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:06,308 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3849 transitions. [2023-12-21 23:44:06,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.923076923076923) internal successors, (180), 26 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3849 transitions. [2023-12-21 23:44:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:06,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:06,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:06,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:06,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:06,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:06,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2147280951, now seen corresponding path program 1 times [2023-12-21 23:44:06,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:06,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60538004] [2023-12-21 23:44:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:06,514 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:06,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 23:44:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:06,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:06,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:07,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:08,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60538004] [2023-12-21 23:44:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60538004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:08,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553174903] [2023-12-21 23:44:08,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:08,006 INFO L87 Difference]: Start difference. First operand 2650 states and 3849 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:13,024 INFO L93 Difference]: Finished difference Result 3545 states and 4932 transitions. [2023-12-21 23:44:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 23:44:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:13,028 INFO L225 Difference]: With dead ends: 3545 [2023-12-21 23:44:13,028 INFO L226 Difference]: Without dead ends: 3263 [2023-12-21 23:44:13,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=881, Invalid=4089, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 23:44:13,031 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 2045 mSDsluCounter, 20104 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 21682 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:13,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 21682 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 23:44:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2023-12-21 23:44:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2873. [2023-12-21 23:44:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2871 states have (on average 1.432601880877743) internal successors, (4113), 2872 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4113 transitions. [2023-12-21 23:44:13,148 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4113 transitions. Word has length 93 [2023-12-21 23:44:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:13,149 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4113 transitions. [2023-12-21 23:44:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 26 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:13,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4113 transitions. [2023-12-21 23:44:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 23:44:13,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:13,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:13,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:13,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:13,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:13,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash -361804269, now seen corresponding path program 1 times [2023-12-21 23:44:13,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:13,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848703952] [2023-12-21 23:44:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:13,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:13,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:13,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 23:44:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:13,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:44:13,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:14,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:44:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:15,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848703952] [2023-12-21 23:44:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848703952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:44:15,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:44:15,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-21 23:44:15,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957366451] [2023-12-21 23:44:15,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:44:15,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 23:44:15,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 23:44:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 23:44:15,265 INFO L87 Difference]: Start difference. First operand 2873 states and 4113 transitions. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:22,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:22,288 INFO L93 Difference]: Finished difference Result 5414 states and 7126 transitions. [2023-12-21 23:44:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:44:22,289 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-21 23:44:22,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:22,293 INFO L225 Difference]: With dead ends: 5414 [2023-12-21 23:44:22,293 INFO L226 Difference]: Without dead ends: 5031 [2023-12-21 23:44:22,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1011, Invalid=4995, Unknown=0, NotChecked=0, Total=6006 [2023-12-21 23:44:22,294 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6402 mSDsluCounter, 23342 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6402 SdHoareTripleChecker+Valid, 24936 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:22,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6402 Valid, 24936 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-21 23:44:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2023-12-21 23:44:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4083. [2023-12-21 23:44:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 4081 states have (on average 1.3582455280568488) internal successors, (5543), 4082 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 5543 transitions. [2023-12-21 23:44:22,429 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 5543 transitions. Word has length 93 [2023-12-21 23:44:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:22,429 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 5543 transitions. [2023-12-21 23:44:22,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 5543 transitions. [2023-12-21 23:44:22,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 23:44:22,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:22,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:22,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:22,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:22,634 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:22,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash -409246789, now seen corresponding path program 1 times [2023-12-21 23:44:22,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:22,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232784808] [2023-12-21 23:44:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:22,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:22,636 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:22,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 23:44:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:22,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:44:22,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 23:44:22,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:22,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:22,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232784808] [2023-12-21 23:44:22,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232784808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:22,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:22,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:44:22,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23986307] [2023-12-21 23:44:22,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:22,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:44:22,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:44:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:22,836 INFO L87 Difference]: Start difference. First operand 4083 states and 5543 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:44:56,837 INFO L93 Difference]: Finished difference Result 7089 states and 10470 transitions. [2023-12-21 23:44:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:44:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 23:44:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:44:56,844 INFO L225 Difference]: With dead ends: 7089 [2023-12-21 23:44:56,844 INFO L226 Difference]: Without dead ends: 5585 [2023-12-21 23:44:56,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:56,846 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 789 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:44:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 535 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 33.8s Time] [2023-12-21 23:44:56,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2023-12-21 23:44:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5585. [2023-12-21 23:44:57,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.3188250044778793) internal successors, (7363), 5584 states have internal predecessors, (7363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 7363 transitions. [2023-12-21 23:44:57,009 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 7363 transitions. Word has length 94 [2023-12-21 23:44:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:44:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 7363 transitions. [2023-12-21 23:44:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:44:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 7363 transitions. [2023-12-21 23:44:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 23:44:57,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:44:57,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:44:57,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 23:44:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:57,214 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:44:57,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:44:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -917184763, now seen corresponding path program 1 times [2023-12-21 23:44:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:44:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198865956] [2023-12-21 23:44:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:44:57,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:44:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:44:57,220 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:44:57,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 23:44:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:44:57,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:44:57,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:44:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:44:57,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:44:57,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:44:57,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198865956] [2023-12-21 23:44:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198865956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:44:57,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:44:57,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:44:57,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764287987] [2023-12-21 23:44:57,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:44:57,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:44:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:44:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:44:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:44:57,446 INFO L87 Difference]: Start difference. First operand 5585 states and 7363 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:45:38,132 INFO L93 Difference]: Finished difference Result 11595 states and 15930 transitions. [2023-12-21 23:45:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:45:38,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-21 23:45:38,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:45:38,141 INFO L225 Difference]: With dead ends: 11595 [2023-12-21 23:45:38,141 INFO L226 Difference]: Without dead ends: 8589 [2023-12-21 23:45:38,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:38,145 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 749 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:45:38,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 740 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 40.4s Time] [2023-12-21 23:45:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8589 states. [2023-12-21 23:45:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8589 to 8589. [2023-12-21 23:45:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8589 states, 8587 states have (on average 1.2436240829160359) internal successors, (10679), 8588 states have internal predecessors, (10679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8589 states to 8589 states and 10679 transitions. [2023-12-21 23:45:38,368 INFO L78 Accepts]: Start accepts. Automaton has 8589 states and 10679 transitions. Word has length 98 [2023-12-21 23:45:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:45:38,368 INFO L495 AbstractCegarLoop]: Abstraction has 8589 states and 10679 transitions. [2023-12-21 23:45:38,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:45:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8589 states and 10679 transitions. [2023-12-21 23:45:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 23:45:38,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:45:38,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:45:38,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-21 23:45:38,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:38,588 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:45:38,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:45:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash -518268428, now seen corresponding path program 1 times [2023-12-21 23:45:38,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:45:38,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791952923] [2023-12-21 23:45:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:45:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:45:38,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:45:38,590 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:45:38,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 23:45:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:45:38,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 23:45:38,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:45:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:45:38,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:45:38,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:45:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791952923] [2023-12-21 23:45:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791952923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:45:38,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:45:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 23:45:38,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678408622] [2023-12-21 23:45:38,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:45:38,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 23:45:38,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:45:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 23:45:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:45:38,799 INFO L87 Difference]: Start difference. First operand 8589 states and 10679 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:13,838 INFO L93 Difference]: Finished difference Result 19858 states and 25080 transitions. [2023-12-21 23:46:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 23:46:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-21 23:46:13,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:13,851 INFO L225 Difference]: With dead ends: 19858 [2023-12-21 23:46:13,851 INFO L226 Difference]: Without dead ends: 13848 [2023-12-21 23:46:13,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 23:46:13,855 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 973 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:13,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 412 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 34.7s Time] [2023-12-21 23:46:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13848 states. [2023-12-21 23:46:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13848 to 13095. [2023-12-21 23:46:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13095 states, 13093 states have (on average 1.2171389291988086) internal successors, (15936), 13094 states have internal predecessors, (15936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 15936 transitions. [2023-12-21 23:46:14,103 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 15936 transitions. Word has length 104 [2023-12-21 23:46:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:14,103 INFO L495 AbstractCegarLoop]: Abstraction has 13095 states and 15936 transitions. [2023-12-21 23:46:14,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 15936 transitions. [2023-12-21 23:46:14,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:14,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:14,106 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:14,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-21 23:46:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:14,309 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1570065093, now seen corresponding path program 2 times [2023-12-21 23:46:14,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:14,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465553404] [2023-12-21 23:46:14,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:14,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:14,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:14,318 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:14,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 23:46:14,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:14,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:14,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:14,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-12-21 23:46:14,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:14,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465553404] [2023-12-21 23:46:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465553404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714718331] [2023-12-21 23:46:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:14,854 INFO L87 Difference]: Start difference. First operand 13095 states and 15936 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:15,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:15,098 INFO L93 Difference]: Finished difference Result 14029 states and 17112 transitions. [2023-12-21 23:46:15,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:15,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:15,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:15,111 INFO L225 Difference]: With dead ends: 14029 [2023-12-21 23:46:15,111 INFO L226 Difference]: Without dead ends: 13221 [2023-12-21 23:46:15,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:15,115 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 1528 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:15,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 3095 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13221 states. [2023-12-21 23:46:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13221 to 13085. [2023-12-21 23:46:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13085 states, 13083 states have (on average 1.2142474967515096) internal successors, (15886), 13084 states have internal predecessors, (15886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13085 states to 13085 states and 15886 transitions. [2023-12-21 23:46:15,355 INFO L78 Accepts]: Start accepts. Automaton has 13085 states and 15886 transitions. Word has length 130 [2023-12-21 23:46:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:15,355 INFO L495 AbstractCegarLoop]: Abstraction has 13085 states and 15886 transitions. [2023-12-21 23:46:15,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 13085 states and 15886 transitions. [2023-12-21 23:46:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:15,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:15,357 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:15,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:15,560 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1215359521, now seen corresponding path program 2 times [2023-12-21 23:46:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911665827] [2023-12-21 23:46:15,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:15,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:15,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:15,561 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:15,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 23:46:15,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:15,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:15,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:15,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-21 23:46:16,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:16,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911665827] [2023-12-21 23:46:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911665827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:16,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801393598] [2023-12-21 23:46:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:16,067 INFO L87 Difference]: Start difference. First operand 13085 states and 15886 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:16,305 INFO L93 Difference]: Finished difference Result 13654 states and 16622 transitions. [2023-12-21 23:46:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:16,317 INFO L225 Difference]: With dead ends: 13654 [2023-12-21 23:46:16,317 INFO L226 Difference]: Without dead ends: 13325 [2023-12-21 23:46:16,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:16,321 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1523 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 3120 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:16,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 3120 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13325 states. [2023-12-21 23:46:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13325 to 13257. [2023-12-21 23:46:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13257 states, 13255 states have (on average 1.2129007921539041) internal successors, (16077), 13256 states have internal predecessors, (16077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13257 states to 13257 states and 16077 transitions. [2023-12-21 23:46:16,585 INFO L78 Accepts]: Start accepts. Automaton has 13257 states and 16077 transitions. Word has length 130 [2023-12-21 23:46:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:16,585 INFO L495 AbstractCegarLoop]: Abstraction has 13257 states and 16077 transitions. [2023-12-21 23:46:16,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 13257 states and 16077 transitions. [2023-12-21 23:46:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 23:46:16,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:16,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:16,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:16,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:16,790 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:16,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:16,791 INFO L85 PathProgramCache]: Analyzing trace with hash 570522555, now seen corresponding path program 2 times [2023-12-21 23:46:16,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:16,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104667815] [2023-12-21 23:46:16,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:46:16,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:16,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:16,792 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:16,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 23:46:16,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 23:46:16,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:46:16,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 23:46:16,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2023-12-21 23:46:17,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 23:46:17,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:17,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104667815] [2023-12-21 23:46:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104667815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 23:46:17,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 23:46:17,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 23:46:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676894745] [2023-12-21 23:46:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 23:46:17,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 23:46:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 23:46:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:17,272 INFO L87 Difference]: Start difference. First operand 13257 states and 16077 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:17,509 INFO L93 Difference]: Finished difference Result 13844 states and 16834 transitions. [2023-12-21 23:46:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 23:46:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-21 23:46:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:17,520 INFO L225 Difference]: With dead ends: 13844 [2023-12-21 23:46:17,521 INFO L226 Difference]: Without dead ends: 13503 [2023-12-21 23:46:17,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 23:46:17,524 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1516 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 3136 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:17,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 3136 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:46:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13503 states. [2023-12-21 23:46:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13503 to 13435. [2023-12-21 23:46:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 13433 states have (on average 1.21156852527358) internal successors, (16275), 13434 states have internal predecessors, (16275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 16275 transitions. [2023-12-21 23:46:17,808 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 16275 transitions. Word has length 130 [2023-12-21 23:46:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:17,808 INFO L495 AbstractCegarLoop]: Abstraction has 13435 states and 16275 transitions. [2023-12-21 23:46:17,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 16275 transitions. [2023-12-21 23:46:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:46:17,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:17,811 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:17,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:18,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:18,014 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:18,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2032387181, now seen corresponding path program 1 times [2023-12-21 23:46:18,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:18,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515564289] [2023-12-21 23:46:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:46:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:18,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:18,015 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:18,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 23:46:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:46:18,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:46:18,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:19,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:46:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 54 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:20,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:20,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515564289] [2023-12-21 23:46:20,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515564289] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:46:20,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:46:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:46:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672342920] [2023-12-21 23:46:20,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:46:20,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:46:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:46:20,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:46:20,501 INFO L87 Difference]: Start difference. First operand 13435 states and 16275 transitions. Second operand has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:46:36,052 INFO L93 Difference]: Finished difference Result 14958 states and 18079 transitions. [2023-12-21 23:46:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-21 23:46:36,053 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 23:46:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:46:36,067 INFO L225 Difference]: With dead ends: 14958 [2023-12-21 23:46:36,068 INFO L226 Difference]: Without dead ends: 13876 [2023-12-21 23:46:36,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7456 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=3247, Invalid=20933, Unknown=0, NotChecked=0, Total=24180 [2023-12-21 23:46:36,076 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 21169 mSDsluCounter, 16028 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21169 SdHoareTripleChecker+Valid, 17647 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:46:36,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21169 Valid, 17647 Invalid, 3270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-21 23:46:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13876 states. [2023-12-21 23:46:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13876 to 13655. [2023-12-21 23:46:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13655 states, 13653 states have (on average 1.2105031861129423) internal successors, (16527), 13654 states have internal predecessors, (16527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13655 states to 13655 states and 16527 transitions. [2023-12-21 23:46:36,366 INFO L78 Accepts]: Start accepts. Automaton has 13655 states and 16527 transitions. Word has length 131 [2023-12-21 23:46:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:46:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 13655 states and 16527 transitions. [2023-12-21 23:46:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:46:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13655 states and 16527 transitions. [2023-12-21 23:46:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 23:46:36,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:46:36,385 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:46:36,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-21 23:46:36,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:36,589 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:46:36,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:46:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1790349623, now seen corresponding path program 1 times [2023-12-21 23:46:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:46:36,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168142306] [2023-12-21 23:46:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:46:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:46:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:46:36,591 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:46:36,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 23:46:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:46:36,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:46:36,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:46:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 130 proven. 50 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 23:46:38,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:46:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 61 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:46:41,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:46:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168142306] [2023-12-21 23:46:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168142306] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:46:41,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:46:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2023-12-21 23:46:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889426895] [2023-12-21 23:46:41,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:46:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-21 23:46:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:46:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-21 23:46:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1318, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 23:46:41,152 INFO L87 Difference]: Start difference. First operand 13655 states and 16527 transitions. Second operand has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:48:15,409 INFO L93 Difference]: Finished difference Result 18680 states and 22370 transitions. [2023-12-21 23:48:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-21 23:48:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-21 23:48:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:48:15,425 INFO L225 Difference]: With dead ends: 18680 [2023-12-21 23:48:15,426 INFO L226 Difference]: Without dead ends: 16402 [2023-12-21 23:48:15,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47295 ImplicationChecksByTransitivity, 85.7s TimeCoverageRelationStatistics Valid=12461, Invalid=99429, Unknown=0, NotChecked=0, Total=111890 [2023-12-21 23:48:15,436 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 26374 mSDsluCounter, 18569 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26374 SdHoareTripleChecker+Valid, 20187 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:48:15,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26374 Valid, 20187 Invalid, 3759 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [230 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2023-12-21 23:48:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16402 states. [2023-12-21 23:48:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16402 to 14620. [2023-12-21 23:48:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14620 states, 14618 states have (on average 1.207552332740457) internal successors, (17652), 14619 states have internal predecessors, (17652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14620 states to 14620 states and 17652 transitions. [2023-12-21 23:48:15,817 INFO L78 Accepts]: Start accepts. Automaton has 14620 states and 17652 transitions. Word has length 131 [2023-12-21 23:48:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:48:15,817 INFO L495 AbstractCegarLoop]: Abstraction has 14620 states and 17652 transitions. [2023-12-21 23:48:15,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.82051282051282) internal successors, (227), 39 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:48:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 14620 states and 17652 transitions. [2023-12-21 23:48:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:48:15,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:48:15,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:48:15,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-21 23:48:16,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:16,023 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:48:16,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:48:16,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1398431679, now seen corresponding path program 1 times [2023-12-21 23:48:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:48:16,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141627080] [2023-12-21 23:48:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:48:16,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:48:16,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:48:16,025 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:48:16,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 23:48:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:48:16,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:48:16,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:48:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:48:18,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:48:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 68 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-21 23:48:19,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:48:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141627080] [2023-12-21 23:48:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141627080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:48:19,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:48:19,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:48:19,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626438107] [2023-12-21 23:48:19,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:48:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:48:19,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:48:19,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:48:19,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=995, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:48:19,527 INFO L87 Difference]: Start difference. First operand 14620 states and 17652 transitions. Second operand has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:49:06,220 INFO L93 Difference]: Finished difference Result 18819 states and 22571 transitions. [2023-12-21 23:49:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2023-12-21 23:49:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-21 23:49:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:49:06,236 INFO L225 Difference]: With dead ends: 18819 [2023-12-21 23:49:06,237 INFO L226 Difference]: Without dead ends: 17680 [2023-12-21 23:49:06,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14587 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=5810, Invalid=31246, Unknown=0, NotChecked=0, Total=37056 [2023-12-21 23:49:06,242 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 19086 mSDsluCounter, 17119 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19086 SdHoareTripleChecker+Valid, 18723 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:49:06,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19086 Valid, 18723 Invalid, 2525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-21 23:49:06,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17680 states. [2023-12-21 23:49:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17680 to 16402. [2023-12-21 23:49:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16402 states, 16400 states have (on average 1.2027439024390243) internal successors, (19725), 16401 states have internal predecessors, (19725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16402 states to 16402 states and 19725 transitions. [2023-12-21 23:49:06,816 INFO L78 Accepts]: Start accepts. Automaton has 16402 states and 19725 transitions. Word has length 132 [2023-12-21 23:49:06,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:49:06,816 INFO L495 AbstractCegarLoop]: Abstraction has 16402 states and 19725 transitions. [2023-12-21 23:49:06,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.029411764705882) internal successors, (205), 34 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:49:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 16402 states and 19725 transitions. [2023-12-21 23:49:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 23:49:06,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:49:06,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:49:06,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-21 23:49:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:07,023 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:49:07,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:49:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 709094905, now seen corresponding path program 1 times [2023-12-21 23:49:07,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:49:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259493946] [2023-12-21 23:49:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:49:07,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:49:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:49:07,040 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:49:07,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 23:49:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:49:07,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 23:49:07,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:49:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:49:08,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:49:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:49:10,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:49:10,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259493946] [2023-12-21 23:49:10,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259493946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:49:10,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:49:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:49:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503284307] [2023-12-21 23:49:10,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:49:10,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:49:10,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:49:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:49:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:49:10,078 INFO L87 Difference]: Start difference. First operand 16402 states and 19725 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:03,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:03,913 INFO L93 Difference]: Finished difference Result 21338 states and 25580 transitions. [2023-12-21 23:50:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-21 23:50:03,914 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-21 23:50:03,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:03,962 INFO L225 Difference]: With dead ends: 21338 [2023-12-21 23:50:03,962 INFO L226 Difference]: Without dead ends: 19267 [2023-12-21 23:50:03,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19475 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=7234, Invalid=42272, Unknown=0, NotChecked=0, Total=49506 [2023-12-21 23:50:03,967 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 27089 mSDsluCounter, 13725 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27089 SdHoareTripleChecker+Valid, 15316 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:03,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27089 Valid, 15316 Invalid, 2076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 1942 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-21 23:50:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19267 states. [2023-12-21 23:50:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19267 to 17457. [2023-12-21 23:50:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17457 states, 17455 states have (on average 1.201775995416786) internal successors, (20977), 17456 states have internal predecessors, (20977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17457 states to 17457 states and 20977 transitions. [2023-12-21 23:50:04,519 INFO L78 Accepts]: Start accepts. Automaton has 17457 states and 20977 transitions. Word has length 132 [2023-12-21 23:50:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:04,519 INFO L495 AbstractCegarLoop]: Abstraction has 17457 states and 20977 transitions. [2023-12-21 23:50:04,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 17457 states and 20977 transitions. [2023-12-21 23:50:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 23:50:04,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:04,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:04,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-21 23:50:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:04,726 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:04,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1153287105, now seen corresponding path program 1 times [2023-12-21 23:50:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:04,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1726861296] [2023-12-21 23:50:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:04,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:04,727 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:04,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 23:50:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:04,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 23:50:04,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:50:05,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 15 proven. 185 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 23:50:05,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1726861296] [2023-12-21 23:50:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1726861296] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:05,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:05,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-21 23:50:05,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185693799] [2023-12-21 23:50:05,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:05,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 23:50:05,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:05,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 23:50:05,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 23:50:05,233 INFO L87 Difference]: Start difference. First operand 17457 states and 20977 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:07,049 INFO L93 Difference]: Finished difference Result 41409 states and 49753 transitions. [2023-12-21 23:50:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 23:50:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-21 23:50:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:07,083 INFO L225 Difference]: With dead ends: 41409 [2023-12-21 23:50:07,083 INFO L226 Difference]: Without dead ends: 35053 [2023-12-21 23:50:07,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 23:50:07,092 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1669 mSDsluCounter, 7841 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 9401 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:07,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 9401 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 23:50:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35053 states. [2023-12-21 23:50:08,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35053 to 34679. [2023-12-21 23:50:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34679 states, 34677 states have (on average 1.1559535138564467) internal successors, (40085), 34678 states have internal predecessors, (40085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34679 states to 34679 states and 40085 transitions. [2023-12-21 23:50:08,822 INFO L78 Accepts]: Start accepts. Automaton has 34679 states and 40085 transitions. Word has length 134 [2023-12-21 23:50:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:08,822 INFO L495 AbstractCegarLoop]: Abstraction has 34679 states and 40085 transitions. [2023-12-21 23:50:08,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 34679 states and 40085 transitions. [2023-12-21 23:50:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:50:08,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:08,825 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:08,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:09,028 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1965052367, now seen corresponding path program 1 times [2023-12-21 23:50:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070493266] [2023-12-21 23:50:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:09,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:09,030 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:09,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 23:50:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:09,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:50:09,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:10,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:11,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:11,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070493266] [2023-12-21 23:50:11,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070493266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:11,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:11,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:50:11,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871944784] [2023-12-21 23:50:11,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:50:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:50:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:50:11,292 INFO L87 Difference]: Start difference. First operand 34679 states and 40085 transitions. Second operand has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:16,780 INFO L93 Difference]: Finished difference Result 44167 states and 51026 transitions. [2023-12-21 23:50:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:50:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 23:50:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:16,813 INFO L225 Difference]: With dead ends: 44167 [2023-12-21 23:50:16,813 INFO L226 Difference]: Without dead ends: 31039 [2023-12-21 23:50:16,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=914, Invalid=5248, Unknown=0, NotChecked=0, Total=6162 [2023-12-21 23:50:16,825 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 19291 mSDsluCounter, 12246 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19291 SdHoareTripleChecker+Valid, 13788 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:16,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19291 Valid, 13788 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 23:50:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31039 states. [2023-12-21 23:50:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31039 to 26480. [2023-12-21 23:50:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26480 states, 26478 states have (on average 1.1557519450109526) internal successors, (30602), 26479 states have internal predecessors, (30602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26480 states to 26480 states and 30602 transitions. [2023-12-21 23:50:18,207 INFO L78 Accepts]: Start accepts. Automaton has 26480 states and 30602 transitions. Word has length 135 [2023-12-21 23:50:18,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:18,208 INFO L495 AbstractCegarLoop]: Abstraction has 26480 states and 30602 transitions. [2023-12-21 23:50:18,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.676470588235294) internal successors, (261), 34 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:18,208 INFO L276 IsEmpty]: Start isEmpty. Operand 26480 states and 30602 transitions. [2023-12-21 23:50:18,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 23:50:18,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:18,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:18,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:18,414 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:18,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash 450560913, now seen corresponding path program 1 times [2023-12-21 23:50:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812972737] [2023-12-21 23:50:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:18,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:18,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:18,416 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:18,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 23:50:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:18,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 23:50:18,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:19,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 48 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:50:20,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812972737] [2023-12-21 23:50:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812972737] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:20,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 34 [2023-12-21 23:50:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558752885] [2023-12-21 23:50:20,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 23:50:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:20,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 23:50:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 23:50:20,555 INFO L87 Difference]: Start difference. First operand 26480 states and 30602 transitions. Second operand has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:50:25,990 INFO L93 Difference]: Finished difference Result 29231 states and 33685 transitions. [2023-12-21 23:50:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-21 23:50:25,991 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-21 23:50:25,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:50:26,015 INFO L225 Difference]: With dead ends: 29231 [2023-12-21 23:50:26,015 INFO L226 Difference]: Without dead ends: 22523 [2023-12-21 23:50:26,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1193 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=884, Invalid=4816, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 23:50:26,026 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 20612 mSDsluCounter, 13580 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20612 SdHoareTripleChecker+Valid, 15121 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 23:50:26,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20612 Valid, 15121 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 23:50:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22523 states. [2023-12-21 23:50:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22523 to 17571. [2023-12-21 23:50:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17571 states, 17569 states have (on average 1.1665433433889236) internal successors, (20495), 17570 states have internal predecessors, (20495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17571 states to 17571 states and 20495 transitions. [2023-12-21 23:50:26,910 INFO L78 Accepts]: Start accepts. Automaton has 17571 states and 20495 transitions. Word has length 135 [2023-12-21 23:50:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:50:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 17571 states and 20495 transitions. [2023-12-21 23:50:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.529411764705882) internal successors, (256), 34 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:50:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17571 states and 20495 transitions. [2023-12-21 23:50:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:50:26,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:50:26,913 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:50:26,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-21 23:50:27,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,116 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:50:27,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:50:27,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1710327405, now seen corresponding path program 1 times [2023-12-21 23:50:27,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:50:27,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686089802] [2023-12-21 23:50:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:50:27,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:50:27,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:50:27,118 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:50:27,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 23:50:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:50:27,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 23:50:27,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:50:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:50:31,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:50:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 68 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 23:50:33,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:50:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686089802] [2023-12-21 23:50:33,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686089802] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:50:33,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:50:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 41 [2023-12-21 23:50:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487868089] [2023-12-21 23:50:33,461 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:50:33,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-21 23:50:33,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:50:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-21 23:50:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1490, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 23:50:33,462 INFO L87 Difference]: Start difference. First operand 17571 states and 20495 transitions. Second operand has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:51:42,035 INFO L93 Difference]: Finished difference Result 24834 states and 28301 transitions. [2023-12-21 23:51:42,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-21 23:51:42,038 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:51:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:51:42,056 INFO L225 Difference]: With dead ends: 24834 [2023-12-21 23:51:42,056 INFO L226 Difference]: Without dead ends: 19934 [2023-12-21 23:51:42,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11221 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=4356, Invalid=28586, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 23:51:42,066 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 13438 mSDsluCounter, 31685 mSDsCounter, 0 mSdLazyCounter, 3720 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13438 SdHoareTripleChecker+Valid, 33259 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 3720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:51:42,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13438 Valid, 33259 Invalid, 3867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [147 Valid, 3720 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-12-21 23:51:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19934 states. [2023-12-21 23:51:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19934 to 18164. [2023-12-21 23:51:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18164 states, 18162 states have (on average 1.1627023455566567) internal successors, (21117), 18163 states have internal predecessors, (21117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18164 states to 18164 states and 21117 transitions. [2023-12-21 23:51:42,815 INFO L78 Accepts]: Start accepts. Automaton has 18164 states and 21117 transitions. Word has length 136 [2023-12-21 23:51:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:51:42,815 INFO L495 AbstractCegarLoop]: Abstraction has 18164 states and 21117 transitions. [2023-12-21 23:51:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.073170731707317) internal successors, (208), 41 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:51:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 18164 states and 21117 transitions. [2023-12-21 23:51:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:51:42,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:51:42,817 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:51:42,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-12-21 23:51:43,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:43,021 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:51:43,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:51:43,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1360215085, now seen corresponding path program 1 times [2023-12-21 23:51:43,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:51:43,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133716598] [2023-12-21 23:51:43,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:51:43,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:51:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:51:43,023 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:51:43,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 23:51:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:51:43,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 23:51:43,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:51:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 50 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:51:45,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:51:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 66 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:51:48,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:51:48,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133716598] [2023-12-21 23:51:48,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133716598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:51:48,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:51:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2023-12-21 23:51:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119237663] [2023-12-21 23:51:48,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:51:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-21 23:51:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:51:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-21 23:51:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1607, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 23:51:48,129 INFO L87 Difference]: Start difference. First operand 18164 states and 21117 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:30,248 INFO L93 Difference]: Finished difference Result 23971 states and 27330 transitions. [2023-12-21 23:52:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 23:52:30,249 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:52:30,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:30,271 INFO L225 Difference]: With dead ends: 23971 [2023-12-21 23:52:30,271 INFO L226 Difference]: Without dead ends: 22840 [2023-12-21 23:52:30,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18420 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=5291, Invalid=46011, Unknown=0, NotChecked=0, Total=51302 [2023-12-21 23:52:30,279 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 25243 mSDsluCounter, 25199 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25243 SdHoareTripleChecker+Valid, 26806 SdHoareTripleChecker+Invalid, 3757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:30,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25243 Valid, 26806 Invalid, 3757 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-12-21 23:52:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22840 states. [2023-12-21 23:52:31,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22840 to 20383. [2023-12-21 23:52:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20383 states, 20381 states have (on average 1.1518080565232325) internal successors, (23475), 20382 states have internal predecessors, (23475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 23475 transitions. [2023-12-21 23:52:31,377 INFO L78 Accepts]: Start accepts. Automaton has 20383 states and 23475 transitions. Word has length 136 [2023-12-21 23:52:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:31,377 INFO L495 AbstractCegarLoop]: Abstraction has 20383 states and 23475 transitions. [2023-12-21 23:52:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 20383 states and 23475 transitions. [2023-12-21 23:52:31,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:52:31,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:31,379 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:52:31,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-21 23:52:31,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:31,582 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:31,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:31,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1864868823, now seen corresponding path program 1 times [2023-12-21 23:52:31,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:31,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869074556] [2023-12-21 23:52:31,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:52:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:31,584 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:31,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 23:52:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:52:31,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 23:52:31,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 138 proven. 65 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:32,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:52:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 135 proven. 68 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:33,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:52:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869074556] [2023-12-21 23:52:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869074556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:52:33,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:52:33,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-21 23:52:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116575426] [2023-12-21 23:52:33,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:52:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 23:52:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:52:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 23:52:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2023-12-21 23:52:33,486 INFO L87 Difference]: Start difference. First operand 20383 states and 23475 transitions. Second operand has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:52:36,094 INFO L93 Difference]: Finished difference Result 22449 states and 25665 transitions. [2023-12-21 23:52:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 23:52:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:52:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:52:36,113 INFO L225 Difference]: With dead ends: 22449 [2023-12-21 23:52:36,113 INFO L226 Difference]: Without dead ends: 18204 [2023-12-21 23:52:36,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 23:52:36,120 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 14856 mSDsluCounter, 7849 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14856 SdHoareTripleChecker+Valid, 9373 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 23:52:36,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14856 Valid, 9373 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 23:52:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2023-12-21 23:52:36,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 16886. [2023-12-21 23:52:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16886 states, 16884 states have (on average 1.1624022743425728) internal successors, (19626), 16885 states have internal predecessors, (19626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:36,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16886 states to 16886 states and 19626 transitions. [2023-12-21 23:52:36,804 INFO L78 Accepts]: Start accepts. Automaton has 16886 states and 19626 transitions. Word has length 136 [2023-12-21 23:52:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:52:36,804 INFO L495 AbstractCegarLoop]: Abstraction has 16886 states and 19626 transitions. [2023-12-21 23:52:36,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.75) internal successors, (210), 24 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:52:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 16886 states and 19626 transitions. [2023-12-21 23:52:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 23:52:36,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:52:36,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:52:36,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-21 23:52:37,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:37,009 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:52:37,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:52:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1528895309, now seen corresponding path program 1 times [2023-12-21 23:52:37,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:52:37,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350739595] [2023-12-21 23:52:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:52:37,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:52:37,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:52:37,011 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:52:37,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 23:52:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:52:37,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 23:52:37,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:52:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 134 proven. 69 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-21 23:52:39,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:52:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 32 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:52:42,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:52:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350739595] [2023-12-21 23:52:42,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350739595] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:52:42,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:52:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 44 [2023-12-21 23:52:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994024478] [2023-12-21 23:52:42,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:52:42,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 23:52:42,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:52:42,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 23:52:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 23:52:42,291 INFO L87 Difference]: Start difference. First operand 16886 states and 19626 transitions. Second operand has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:53:31,441 INFO L93 Difference]: Finished difference Result 20135 states and 23023 transitions. [2023-12-21 23:53:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-21 23:53:31,442 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-21 23:53:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:53:31,457 INFO L225 Difference]: With dead ends: 20135 [2023-12-21 23:53:31,457 INFO L226 Difference]: Without dead ends: 16845 [2023-12-21 23:53:31,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20198 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=5748, Invalid=50184, Unknown=0, NotChecked=0, Total=55932 [2023-12-21 23:53:31,465 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 30816 mSDsluCounter, 16045 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30816 SdHoareTripleChecker+Valid, 17642 SdHoareTripleChecker+Invalid, 4038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-12-21 23:53:31,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30816 Valid, 17642 Invalid, 4038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-12-21 23:53:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16845 states. [2023-12-21 23:53:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16845 to 14873. [2023-12-21 23:53:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14873 states, 14871 states have (on average 1.1723488669221975) internal successors, (17434), 14872 states have internal predecessors, (17434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14873 states to 14873 states and 17434 transitions. [2023-12-21 23:53:32,072 INFO L78 Accepts]: Start accepts. Automaton has 14873 states and 17434 transitions. Word has length 136 [2023-12-21 23:53:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:53:32,072 INFO L495 AbstractCegarLoop]: Abstraction has 14873 states and 17434 transitions. [2023-12-21 23:53:32,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.636363636363637) internal successors, (248), 44 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:53:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14873 states and 17434 transitions. [2023-12-21 23:53:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 23:53:32,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:53:32,074 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:53:32,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-21 23:53:32,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:32,277 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:53:32,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:53:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1806980845, now seen corresponding path program 2 times [2023-12-21 23:53:32,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:53:32,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713680073] [2023-12-21 23:53:32,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 23:53:32,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:53:32,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:53:32,280 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:53:32,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 23:53:32,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 23:53:32,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 23:53:32,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 23:53:32,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:53:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 137 proven. 59 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 23:53:34,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:53:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 39 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 23:53:38,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:53:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713680073] [2023-12-21 23:53:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713680073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:53:38,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:53:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 47 [2023-12-21 23:53:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942436739] [2023-12-21 23:53:38,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:53:38,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 23:53:38,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:53:38,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 23:53:38,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1903, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 23:53:38,039 INFO L87 Difference]: Start difference. First operand 14873 states and 17434 transitions. Second operand has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:54:18,839 INFO L93 Difference]: Finished difference Result 18525 states and 21250 transitions. [2023-12-21 23:54:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-21 23:54:18,846 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-21 23:54:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:54:18,862 INFO L225 Difference]: With dead ends: 18525 [2023-12-21 23:54:18,862 INFO L226 Difference]: Without dead ends: 16824 [2023-12-21 23:54:18,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18817 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=5499, Invalid=44901, Unknown=0, NotChecked=0, Total=50400 [2023-12-21 23:54:18,870 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 28063 mSDsluCounter, 20874 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28063 SdHoareTripleChecker+Valid, 22407 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-21 23:54:18,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28063 Valid, 22407 Invalid, 3247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [198 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-21 23:54:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16824 states. [2023-12-21 23:54:19,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16824 to 14942. [2023-12-21 23:54:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14942 states, 14940 states have (on average 1.1701472556894243) internal successors, (17482), 14941 states have internal predecessors, (17482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14942 states to 14942 states and 17482 transitions. [2023-12-21 23:54:19,469 INFO L78 Accepts]: Start accepts. Automaton has 14942 states and 17482 transitions. Word has length 137 [2023-12-21 23:54:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:54:19,470 INFO L495 AbstractCegarLoop]: Abstraction has 14942 states and 17482 transitions. [2023-12-21 23:54:19,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.170212765957447) internal successors, (243), 47 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14942 states and 17482 transitions. [2023-12-21 23:54:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 23:54:19,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:54:19,471 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:54:19,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-21 23:54:19,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:19,674 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:54:19,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:54:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash 436761587, now seen corresponding path program 1 times [2023-12-21 23:54:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:54:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666646572] [2023-12-21 23:54:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:54:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:54:19,676 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:54:19,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 23:54:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:54:19,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 23:54:19,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:54:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 149 proven. 40 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:54:20,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:54:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-21 23:54:21,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:54:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666646572] [2023-12-21 23:54:21,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666646572] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:54:21,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:54:21,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 25 [2023-12-21 23:54:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341368764] [2023-12-21 23:54:21,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:54:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 23:54:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:54:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 23:54:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2023-12-21 23:54:21,324 INFO L87 Difference]: Start difference. First operand 14942 states and 17482 transitions. Second operand has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 23:54:23,806 INFO L93 Difference]: Finished difference Result 16316 states and 18920 transitions. [2023-12-21 23:54:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 23:54:23,807 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-21 23:54:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 23:54:23,819 INFO L225 Difference]: With dead ends: 16316 [2023-12-21 23:54:23,819 INFO L226 Difference]: Without dead ends: 14351 [2023-12-21 23:54:23,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=519, Invalid=1737, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 23:54:23,822 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 10690 mSDsluCounter, 13750 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10690 SdHoareTripleChecker+Valid, 15261 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 23:54:23,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10690 Valid, 15261 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 23:54:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14351 states. [2023-12-21 23:54:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14351 to 13668. [2023-12-21 23:54:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13668 states, 13666 states have (on average 1.1797160837114005) internal successors, (16122), 13667 states have internal predecessors, (16122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13668 states to 13668 states and 16122 transitions. [2023-12-21 23:54:24,270 INFO L78 Accepts]: Start accepts. Automaton has 13668 states and 16122 transitions. Word has length 138 [2023-12-21 23:54:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 23:54:24,271 INFO L495 AbstractCegarLoop]: Abstraction has 13668 states and 16122 transitions. [2023-12-21 23:54:24,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.68) internal successors, (192), 25 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:54:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13668 states and 16122 transitions. [2023-12-21 23:54:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 23:54:24,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 23:54:24,272 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:54:24,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-21 23:54:24,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:24,476 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 23:54:24,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 23:54:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1752291729, now seen corresponding path program 1 times [2023-12-21 23:54:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 23:54:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968053390] [2023-12-21 23:54:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 23:54:24,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:54:24,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 23:54:24,478 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 23:54:24,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 23:54:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 23:54:24,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 23:54:24,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 23:54:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:54:26,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 23:54:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 106 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 23:54:29,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 23:54:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968053390] [2023-12-21 23:54:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968053390] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 23:54:29,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 23:54:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2023-12-21 23:54:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303905950] [2023-12-21 23:54:29,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 23:54:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 23:54:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 23:54:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 23:54:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 23:54:29,325 INFO L87 Difference]: Start difference. First operand 13668 states and 16122 transitions. Second operand has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 23:56:56,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-21 23:57:11,924 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:57:11,935 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 23:57:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 23:57:12,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1672 ImplicationChecksByTransitivity, 141.8s TimeCoverageRelationStatistics Valid=1302, Invalid=5496, Unknown=8, NotChecked=0, Total=6806 [2023-12-21 23:57:12,854 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 993 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-12-21 23:57:12,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1500 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-12-21 23:57:12,855 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-21 23:57:12,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-12-21 23:57:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 23:57:13,055 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (13668states) and FLOYD_HOARE automaton (currently 57 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 83 known predicates. [2023-12-21 23:57:13,057 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-21 23:57:13,059 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 23:57:13,061 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 23:57:13,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:57:13 BoogieIcfgContainer [2023-12-21 23:57:13,065 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 23:57:13,066 INFO L158 Benchmark]: Toolchain (without parser) took 875025.02ms. Allocated memory was 188.7MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 140.2MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1268.93ms. Allocated memory is still 188.7MB. Free memory was 139.8MB in the beginning and 64.9MB in the end (delta: 74.9MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 168.31ms. Allocated memory is still 247.5MB. Free memory was 194.3MB in the beginning and 159.2MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: Boogie Preprocessor took 250.38ms. Allocated memory is still 247.5MB. Free memory was 159.2MB in the beginning and 120.9MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: RCFGBuilder took 23807.05ms. Allocated memory was 247.5MB in the beginning and 343.9MB in the end (delta: 96.5MB). Free memory was 120.9MB in the beginning and 204.8MB in the end (delta: -83.9MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. [2023-12-21 23:57:13,066 INFO L158 Benchmark]: TraceAbstraction took 849504.99ms. Allocated memory was 343.9MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 204.3MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-21 23:57:13,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 143.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1268.93ms. Allocated memory is still 188.7MB. Free memory was 139.8MB in the beginning and 64.9MB in the end (delta: 74.9MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 168.31ms. Allocated memory is still 247.5MB. Free memory was 194.3MB in the beginning and 159.2MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 250.38ms. Allocated memory is still 247.5MB. Free memory was 159.2MB in the beginning and 120.9MB in the end (delta: 38.3MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. * RCFGBuilder took 23807.05ms. Allocated memory was 247.5MB in the beginning and 343.9MB in the end (delta: 96.5MB). Free memory was 120.9MB in the beginning and 204.8MB in the end (delta: -83.9MB). Peak memory consumption was 111.7MB. Max. memory is 8.0GB. * TraceAbstraction took 849504.99ms. Allocated memory was 343.9MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 204.3MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (13668states) and FLOYD_HOARE automaton (currently 57 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 83 known predicates. - TimeoutResultAtElement [Line: 377]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 377). Cancelled while NwaCegarLoop was constructing difference of abstraction (13668states) and FLOYD_HOARE automaton (currently 57 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 83 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 849.5s, OverallIterations: 41, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 764.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 330852 SdHoareTripleChecker+Valid, 235.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330852 mSDsluCounter, 402747 SdHoareTripleChecker+Invalid, 203.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 344999 mSDsCounter, 3610 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50353 IncrementalHoareTripleChecker+Invalid, 53963 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3610 mSolverCounterUnsat, 57748 mSDtfsCounter, 50353 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8052 GetRequests, 5548 SyntacticMatches, 1 SemanticMatches, 2502 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166859 ImplicationChecksByTransitivity, 528.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34679occurred in iteration=32, InterpolantAutomatonStates: 2003, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.4s AutomataMinimizationTime, 40 MinimizatonAttempts, 29694 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 61.4s InterpolantComputationTime, 3678 NumberOfCodeBlocks, 3414 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 6183 ConstructedInterpolants, 1328 QuantifiedInterpolants, 84318 SizeOfPredicates, 206 NumberOfNonLiveVariables, 7956 ConjunctsInSsa, 454 ConjunctsInUnsatCore, 64 InterpolantComputations, 18 PerfectInterpolantSequences, 4369/7989 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown